The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1978
Filed:
Jan. 19, 1977
John L Carroll, Portland, OR (US);
Other;
Abstract
A thermally responsive valve is connected to a fire extinguisher between a pressure gauge and an extinguisher outlet to which such gauge would normally be secured. The valve includes a fitting having a passage extending therethrough so that pressure in the extinguisher may be sensed and displayed by the gauge. Detachably mounted to the fitting is a spray head having a port communicating with the passage, the port being normally sealed by a heat collecting disc. The disc is fused to the spray head by fusible material and when the environment surrounding the extinguisher reaches a predetermined temperature, the fusible material will melt thereby releasing the disc from sealing the port. The extinguisher's pressurized contents are then automatically expelled through the port for extinguishing a fire.